皮皮学，免费搜题
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【单选题】
有一皮类生药粉末，红棕色，纤维多单个散在，石细胞类圆形或类方形，壁厚，有的三面厚一面薄，油细胞常见，具有特异性香味。此生药为A.
厚朴
B.
肉桂
C.
D.
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【单选题】听力原文：The birthplace was to open at 10 a. m. It was 9: 30 and already the pilgrims had formed a queue. I asked a lady from Ohio why she had come. 'For Shakespeare, 'she said. 'Isn't that why you came?'...
A.
U. S.A.
B.
Europe.
C.
Ohio.
D.
His hometown.
【单选题】听力原文： The birthplace was to open at 10 a. m. It was 9: 30 and already the pilgrims had formed a queue. I asked a lady from Ohio why she had come. 'For Shakespeare, 'she said. 'Isn't that why you came?...
A.
U. S.A.
B.
Europe.
C.
Ohio.
D.
His hometown.
【简答题】求图1.13所示电路中开关S闭合和断开两种情况下a、b、c三点的电位。
【单选题】Where do the tours end?
A.
At the Courtyard.
B.
At the entrance to the State Apartments.
C.
At St. George's Chapel.
【简答题】对计算机网络安全威胁有哪些？对网络管理的安全威胁有哪些？
【多选题】该公司在清理会计档案时，对于保管期满的会计档案，应由（ ）提出销毁意见，编制会计档案销毁清册。 查看材料
A.
单位档案管理部门
B.
会计机构负责人
C.
单位负责人
D.
会计机构
【简答题】嘌呤核苷酸从头合成的原料有( )、 ( )、( )及( )等,合成的限速酶是( ),第一步合成的是( ),重要的中间产物是( ),后者与Asp作用生成( ) ,另外还可脱氢并与Gln作用生成( )。
【简答题】嘌呤核苷酸的从头合成途径需要的原料有:( )、( )、( )、( )和( )。
【单选题】I __ already __ my homework by 9:30 last night. [ ]
A.
win, finish
B.
have, finished
C.
had, finished
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